Perform Calculations | Formula Field - Zoho Forms

Using the Formula Field

Overview

Make your form a math wiz by allowing it to perform calculations. You can total up costs, process grade quizzes, apply discounts, and more! 

Use the  Formula  field to set up any form calculation. When your respondents fill in the form, calculations will be performed based on their input. The answer will be displayed in the field you have entered your formula in.

Using the Formula field you can,

  • Perform mathematical operations such as addition, subtraction, multiplication, and division 
  • Use certain  math functions  to calculate differences between two times, dates, and more 
  • Set up conditional calculations  to perform calculations based on the respondent's answers  

How to configure a Formula field

To add a formula field to your form,

  1. Click the  Formula  field under the  Advanced Fields  section.
  2. In the pop-up, your form fields would appear in the left pane. Use the fields on the left, numbers, and mathematical operators on the right to come up with your formula.

    Add Formula
  3. Click Done.
  4. You can choose to hide this field from your respondents using the   Hide Field  option under  Properties
  5. If you wish to edit your formula, click the Edit  link under Properties.
Supported Field Types for Formula
Number, Decimal, Currency, Slider, Rating, Formula, Radio, Checkbox, Multiple Choice, Dropdown, Image Choice, Date, Date-Time, Time.

For example, you can calculate the amount your customer has to pay using the formula field and display the amount in the payment field automatically. For this, you can set the formula as  Item * Quantity , where the number  value assigned  for the field  Item  is taken for the calculation.
Note
While using the Formula field as a variable for calculating another formula, ensure that the two formulas are not mutually dependent. If you have come across an error because two formulas are mutually dependent, then refer to the below example:
If  n1, n2, n3 are three number fields, and f1, f2, f3 are the formulas that you have created where,

f1= n1+ n2 
f2= n3 + f3
f3= f1 + f2

Formula 2 depends on Formula 3's answer (and vice versa) to perform calculations, resulting in an endless loop. Recheck your formula to avoid this type of infinite loop.

Functions

Using the math functions we support, you can calculate the differences between time and date fields, and also round off decimal numbers into integers. You will find  Functions  in the right pane of the  Formula  field pop-up. 

To use a function,

  1. Tap on the math function you wish to add.
  2. It generates a syntax like this:  Function (Field Name - Field Name) .
  3. Replace the field's placeholders with the required form fields by clicking them from the left pane. 

    Math Functions in Formula field

Supported Math Functions

Function
Role
Supported Field Types
DayDiff
Returns the day difference between two date values
Date, Date-Time
MonthDiff
Returns the month difference between two date values
Date, Date-Time
YearDiff
Returns the year difference between two date values
Date, Date-Time
HourDiff
Returns the hour difference between two time values
Time, Date-Time
MinutesDiff
Returns the minute difference between two time values
Time, Date-Time
RoundUp
Rounds off the decimal number to that next value, away from zero
Decimal, Currency, Formula
RoundDown
Rounds off the decimal number to that of the previous value
Decimal, Currency, Formula
Round
Rounds off a decimal number to that of the next number when the decimal
value is .5 or above, and to the previous number when the decimal value is below .5
Decimal, Currency, Formula
Age 
Returns the age in years from the selected date as of the current date. If the selected Date field is left blank, or if the selected date is a future date relative to the current date, the Age will be taken as 0.
When calculating age, the months completed are not returned.For example, if the age calculated is 19 years and 7 months, only 19 years is returned.
Date, Date-Time
SelectionCount Returns the number of options selected in the supported choice based field types. If a choice field (supported field) in Subform is used within the formula, this function returns the sum of all choices selected Multiple Choice, Checkbox, Image Choices (not supported in Subform)
CurrentDate
This system field is used to return the difference between the current date and the selected date in the DayDiff, MonthDiff, and YearDiff functions
Date, Date-Time
AllowedDaysCount
Returns the number days that are available for selection between 2 given dates
Date, Date-Time

Adding a Unit to Formula

You can add a unit to your formula to show the result more contextually in the live form. A unit can be added once the formula configuration is completed. 

To include a unit for the formula calculated value:

  1. Enter a suitable  Unit  under  Properties .

  2. You can select to position this unit either as a  Prefix  or a  Suffix


    Note : The unit for a formula will be displayed only in Subform's Pop-up mode.

    Zoho CRM Training Programs

    Learn how to use the best tools for sales force automation and better customer engagement from Zoho's implementation specialists.

    Zoho CRM Training
      Redefine the way you work
      with Zoho Workplace

        Zoho DataPrep Personalized Demo

        If you'd like a personalized walk-through of our data preparation tool, please request a demo and we'll be happy to show you how to get the best out of Zoho DataPrep.

        Zoho CRM Training

          Create, share, and deliver

          beautiful slides from anywhere.

          Get Started Now


            Zoho Sign now offers specialized one-on-one training for both administrators and developers.

            BOOK A SESSION








                                    You are currently viewing the help pages of Qntrl’s earlier version. Click here to view our latest version—Qntrl 3.0's help articles.




                                        Manage your brands on social media

                                          Zoho Desk Resources

                                          • Desk Community Learning Series


                                          • Digest


                                          • Functions


                                          • Meetups


                                          • Kbase


                                          • Resources


                                          • Glossary


                                          • Desk Marketplace


                                          • MVP Corner


                                          • Word of the Day


                                            Zoho Marketing Automation

                                              Zoho Sheet Resources

                                               

                                                  Zoho Forms Resources


                                                    Secure your business
                                                    communication with Zoho Mail


                                                    Mail on the move with
                                                    Zoho Mail mobile application

                                                      Stay on top of your schedule
                                                      at all times


                                                      Carry your calendar with you
                                                      Anytime, anywhere




                                                            Zoho Sign Resources

                                                              Sign, Paperless!

                                                              Sign and send business documents on the go!

                                                              Get Started Now




                                                                      Zoho TeamInbox Resources



                                                                              Zoho DataPrep Resources



                                                                                Zoho DataPrep Demo

                                                                                Get a personalized demo or POC

                                                                                REGISTER NOW


                                                                                  Design. Discuss. Deliver.

                                                                                  Create visually engaging stories with Zoho Show.

                                                                                  Get Started Now









                                                                                                      • Related Articles

                                                                                                      • Using Conditional Formula

                                                                                                        The conditional formula set up in Zoho Forms allows you to configure your form to perform certain calculations based on your respondents' answers. These predefined conditions are simple to set up and they will tailor your form to your user's needs. ...
                                                                                                      • How to use the Formula field and auto-populate the calculated value in the Payment field?

                                                                                                        Money is a tricky thing. It has the potential to alter the course of any alliance, particularly one involving payments. Seller- buyer relationships can quickly become a hassle if the money flow is not error-free. And like always, Zoho Forms is here ...
                                                                                                      • Field Properties

                                                                                                        Table of Contents Overview Dynamic Field Labels Rename Uploaded Files Assign Values to Choices Group Choices Overview You can set the properties to customize each field added to your form. To do so, click the field on your form builder. Under ...
                                                                                                      • Field Rules

                                                                                                        Overview Using the Field Rules, you can choose to show or hide certain form fields to your respondents or set certain fields as mandatory to fill in based on their previous responses on the form. This way, you can let your respondents see only the ...
                                                                                                      • Date Field

                                                                                                        With the Date field in Zoho Forms, you can customize calendars to set the range of dates that you want to allow your respondents to choose from. You can set the starting day of all the weeks across the calendar, allow respondents to pick dates that ...
                                                                                                        Wherever you are is as good as
                                                                                                        your workplace

                                                                                                          Resources

                                                                                                          Videos

                                                                                                          Watch comprehensive videos on features and other important topics that will help you master Zoho CRM.



                                                                                                          eBooks

                                                                                                          Download free eBooks and access a range of topics to get deeper insight on successfully using Zoho CRM.



                                                                                                          Webinars

                                                                                                          Sign up for our webinars and learn the Zoho CRM basics, from customization to sales force automation and more.



                                                                                                          CRM Tips

                                                                                                          Make the most of Zoho CRM with these useful tips.



                                                                                                            Zoho Show Resources